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Do local variables in Java have default values?
No, local variables do not have default values. Once we create a local variable we must initialize it before using it.
Since the local variables in Java are stored in stack in JVM there is a chance of getting the previous value as default value. Therefore, In Java default values for local variables are not allowed.
Example
public class Sample {
public static void main(String args[] ){
int data;
System.out.println(data);
}
}
Error
C:\Sample>javac Sample.java
Sample.java:4: error: variable data might not have been initialized
System.out.println(data);
^
1 error
Updated on 30-Jul-2019 22:30:20
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